Pulley mountings in fast & loose pulley drive - Basic Mechanical Engineering

Q.  Which flat belt drive system has two pulleys mounted on driven shaft and one pulley on driving shaft?  
- Published on 01 Sep 15

a. Multiple belt drive
b. Cone pulley drive
c. Fast and loose pulley drive
d. None of the above

ANSWER: Fast and loose pulley drive

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    Discussion

  • Sravanthi   -Posted on 06 Nov 15
    Fast and loose pulley drive: This flat belt drive system has two pulleys mounted on driven shaft and one pulley on driving shaft.

    - The pulley keyed to driven shaft is known as fast pulley which transmits power from belt to driven shaft.

    - The pulley which rotates freely on driven shaft is known as loose pulley and cannot transmit power.

    - These pulleys are used when driven shaft is needed to start or stop without stopping driving shaft.

    Cone pulley drive: These drives are used for changing speed of driven shaft when driving shaft runs at constant speed.

    Multiple belt drive: These drives are used when power is transmitted from one shaft to number of shafts connected in parallel.

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